Acknowledgments

We would like to acknowledge several people at SAS whose efforts have contributed to the completion of this book. First of all, we are grateful to Jim Goodnight, who originally encouraged us to write the book. We also thank Jim Ashton, Donna Fulenwider, and Jenny Kendall, who reviewed the original chapters and contributed many useful comments.

The work of several colleagues has influenced our writing. In particular, we acknowledge Professors Walt Harvey of Ohio State University; Ron Hocking, formerly of Texas A&M University; George Milliken and Dallas Johnson of Kansas State University; Bill Sanders of the University of Tennessee; Shayle Searle of Cornell University; and David Weeks of Oklahoma State University.

Walter Stroup would like to thank colleague Erin Blankenship and graduate students in the UNL biometry department, especially Kurt Brumbaugh, Prabhakar Dhungana, LeAnna Guerin, Haifeng Guo, Rebecca Hensberry, Lana Olson, Yaobing Sui, and Yuli Xie, for their valuable feedback during the writing of this book.

For the fourth edition we gratefully acknowledge the SAS reviewers, Brent Cohen, Mike Patetta, Kathleen Kiernan, and Randy Tobias. We are also grateful to the outside reviewers, Stephen Kachman of the University of Nebraska, Mark Payton of Oklahoma State University, and William Bridges Jr. of Clemson University.

Also important to this effort is the SAS production team of copyeditor Tate Renner, technical publishing specialists Candy Farrell and Janet Howard, cover designer Cate Parrish, and marketing analysts Patricia Spain and Ericka Wilcher. We express a special thank-you to acquisitions editor Judy Whatley for her many efforts keeping us on track and keeping us organized, and for her attention to the many details of this project. We literally could not have done it without her.

Finally, we thank our wives and families for their support and for their patience during the many hours spent away from them working on this book.